Answers

2015-07-15T19:10:46+08:00
200 ml is the volume of the solution.
30% of that is ethanol.
What is 30% of 200 ml?

    200
x 0.30
  60.00 ml

60 ml is the volume of ethanol.

To get the volume of water, subtract the volume of the ethanol from the volume of the solution.

   200
-    60
140 ml

140 ml is the volume of water.


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